For those who don't follow consumer advocate gaming journalism.
Current situation with Steam it bit chaotic. The store if filled with shovelware, asset flips (games /parts of game that are bought from asset store and [re]- released as own product, or in some cases pirated assets) or games that are not even functional. (eg. no .EXE file, more bugs than game or it isn't a game in first place)
Steams library expanded 40% last year alone and games that are worth of money or time has become minority on steam. As a informed costumer of Valve I don't care these "games" but they have impact on gaming industry. Legit games gets less attention in Steam front page. The truth of these shovelware "games" is their only purpose is to mill trading cards, which has created a whole new business model inside steam. Every time steam client makes transaction with trading carts valve and the game dev gets a cut from transaction
(My Source).
This isn't good for Valve's reputation IMO and this what Valve is trying to address. This is why I think its good news to hear Valve doesn't want to be associated with this kind is scheme. I'm actually ready to reform my opinion about Valve which has been bit negative over few years.
If Valve doesn't do anything gaming industry will become less heathy because they are the only company that can enforce game devs and publisher to invest quality on games. The last major step was steam refund system and I believe they where forced to add it because EU laws.